Vanadium dioxide and vanadium pentoxide thin films are irradiated by a near-infrared continuous-wave laser beam and the dynamic optical limiting performance is measured. The temperature varying with time of the films induced by a laser beam is also recorded by an IR thermal sensor. Under the irradiation of a laser beam with an intensity of and a spot diameter of , the laser beam transmittance of the film decreases from before phase transition to after phase transition, and the response time is ; the laser beam transmittance of the film decreases from before phase transition to after phase transition, and the response time is . The optical limiting is realized by this laser heating-induced phase transition.
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